1020213123 has 8 divisors (see below), whose sum is σ = 1362668736. Its totient is φ = 678949800.

The previous prime is 1020213121. The next prime is 1020213143. The reversal of 1020213123 is 3213120201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020213123 - 2¹ = 1020213121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020213121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296073 + ... + 299498.

It is an arithmetic number, because the mean of its divisors is an integer number (170333592).

Almost surely, 2^1020213123 is an apocalyptic number.

1020213123 is a deficient number, since it is larger than the sum of its proper divisors (342455613).

1020213123 is an equidigital number, since it uses as much as digits as its factorization.

1020213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596145.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1020213123 is about 31940.7752410614. The cubic root of 1020213123 is about 1006.6928139757.

Adding to 1020213123 its reverse (3213120201), we get a palindrome (4233333324).

The spelling of 1020213123 in words is "one billion, twenty million, two hundred thirteen thousand, one hundred twenty-three".